閾下通道 的英文怎麼說

中文拼音 [yùxiàtōngdào]
閾下通道 英文
subliminal channel
  • 閾 : 名詞1. [書面語] （門坎兒） threshold; doorsill2. （界限; 范圍） threshold
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 通 : 通量詞（用於動作）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. In this dissertation we make a study of subliminal channels that conclude the progress, the application, the model, the construction, the stego - key, the capacity, the security, the way to realize subliminal - freeness, and so on

    本文對閾下通道技術進行了比較全面的總結和研究，包括閾下通道的發展狀況，應用前景，閾下通道的模型，構造方法，隱匿密鑰，容量，安全性以及封閉方法等。
  2. The principles of erasure codes used under binary erasure channels are summarized and erasure codes which belong to standard classes of rs codes are introduced with emphasis on cascaded low - density erasure codes with linear time encoding and erasure recover algorithms. thresholds of regular degree distributions are analyzed. it is shown that low - density erasure codes based on ( d, 2d ) - regular sequences of degree distribution are not close to optimal ( d 3 ). two pares of irregular degree distribution sequences are introduced and a pare of improved right regular sequences of low - density erasure codes are presented, it is testified that the new sequences are asymptotically quasi - optimal. in the meantime, simulations of cascaded low - density erasure codes based on a few types of special sequences of degree distribution available are given, together with performance analyses on these codes

    闡述了應用於刪除通道下的糾刪碼基本原理，介紹了兩類標準的rs碼類糾刪碼，重點分析了具有線性時間編碼和恢復演算法的漸近好碼?級聯型低密度糾刪碼，分析了正則度分佈的閾值，對正則低密度校驗碼在刪除通道下的糾錯性能進行了模擬，從理論上證明了基於（ d ， 2d ） -正則度序列的低密度糾刪碼都不是漸近最優碼（ d 3 ） ，同時還分析了非正則低密度校驗碼的度序列設計，基於右邊正則序列提出了一種改進型右邊正則序列，證明了此序列為漸近擬最優的，對基於幾類現有典型度分佈序列的級聯型低密度糾刪碼進行了模擬模擬及性能分析； 3
  3. The concept of stego - key exchange is first presented. some conditions and a basic protocol of realizing it are first discussed. then a known - secret stego - key exchange scheme and some unknown - secret stego - key exchange schemes are designed

    首次對閾下通道中的隱匿密鑰協商的概念、實現條件和基本協議進行了討論，並設計了已知秘密的隱匿密鑰協商方案和幾個未知秘密的隱匿密鑰協商方案。
  4. A subliminal channel is a covert communication channel to send a message to an authorized receiver. this channel is constructed in the output crypto - data of an applied public - key cryptosystem such as digital signature, authentication, and so on. the message can not be discovered by any unauthorized receivers

    閾下通道是指在基於公鑰密碼技術的數字簽名、認證等應用密碼體制的輸出密碼數據中建立起來的一種隱蔽通道，除指定的接收者外，任何其他人均不知道密碼數據中是否有閾下消息存在。
  5. A general model of subliminal channels and some necessary conditions that the carrier cryptosystem must holds are given. a secret channel and an attack channel are first defined and some basic conclusions of the security are given. two new parameters, the embedding rate and the channel - using rate, that have large effects on the capacity and the security of subliminal channels are first defined

    給出了閾下通道系統的一般模型和宿主密碼系統須滿足的必要條件，首次定義了閾下通道中的秘密通道與攻擊通道，並給出關于安全性的基本結論，首次定義了對容量和安全性有一定影響的嵌入成功率和通道使用率兩個新參數。
  6. The capacity of subliminal channels in elgamal signatures is studied. the capacity of broadband channel and the optimal schemes in 18 general elgamal signatures are analyzed. the relation between the capacity and the embedding rate of narrowband subliminal channels based on the exhausting search is studied

    給出了容量的定義，理論上界以及影響容量的幾個因素，給出了嵌入成功率和通道使用率對容量的影響，研究了elgamal簽名中寬帶通道的容量，分析了18種廣義elgamal簽名中的寬帶閾下通道的容量並指出了最優方案，具體研究了基於搜索的窄帶通道的容量與嵌入成功率的關系，具體研究了牛頓通道的帶寬。
  7. The schemes to avoid the subliminal channels are summarized and compared with each other. a conclusion is drawn that the subliminal channel introduced by the semantic randomness of the input harmless message of cryptosystem can not be completely avoided. a new scheme to generate elgamal - type signatures that are free of any subliminal channels introduced by its session key is designed

    總結了封閉閾下通道的若干方法並對各方案優缺點進行了對比分析，給出了作為系統輸入的無害消息的語義隨機性不可能完全封閉的結論，設計了新的對elgamal類簽名中會話密鑰進行完全封閉的方案，討論了現有封閉方案的實用性。
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